Jacking apparatus



J. G'UTMANN, JR.

JACKING APPARATUS, APPLICATION FILED APR. 12. 1921.

Emma May m, 1922.

2 SHEETS-SHEET l- ATTORNEY wrmssb:

J. GUTMANN, JR. JACKING APPARATUS.

APPLICATION FILED APR. 12, 1921.

1,416,633., Patented May16,1922,

2 SHEETS-SHEET 2.

. o a r M I ATTORNEY tfr fr i l flrd A. t m,

JAGKING APPARATUS.

Specification of Letters Patent.

Patented May 1 6, 1922.

Application filed April 12, 1921. Serial No. 460,845.

T 0 all whom it may concern:

Be it known that I, JOHN GUTMANN, J12,

a citizen of the United States, residing at Ridgewood. 1n the county ofQueensjand State of New York. have invented new and useful Improvementsin Jacking Apparatus, of which'the following is a specification.

This invention relates to jacking apparatus.

More particularly, the invention relates to mechanically operable jacksarranged in operative positions on a motor vehicle for raising and thenlowering the same.

7 Some of the objects of the present'invention are: to equip a motorvehicle'with a number of jacks .whichare capable of being operated forthe raising and the lowering .of the. said vehicle by power derived fromthe motor of the vehicle; to equip a motor vehicle with a mechanicallyoperable jack at each of the four corners thereof and mechanism withwhich the jacks may be operated selectively or simultaneously in raisingand lowering a part of the vehicle or the entire vehicle; to. operatethe jacks by power derived preferably from the .startinq motor of thevehicle; to provide means or rendering the sparking system of thevehicle inactive thus insuring the in activity of the. engine of thevehicle during the jacking operations. With these and other objects inview the invention resides in the particular provision and combinationof parts hereinafter more fully described and illustrated in theaccompanying drawings, in which 2 Figure 1 is a diagrammatic view andillustrating conventionally the combination of elements constituting thepresent invention.

Figure 2 is a sectional view through one of the units of thetransmission mechanism and connected parts.

Figure 8 is an elevation of one of the jacks.- 1

Figure 4' is a central vertical sectional view through one of the jacks.

Figureh is ahorizontal sectional view taken on the line 5-5, Figure 4.

Figure 6 is a view of the combination of levers for operating one of thejacks. Generally, the present apparatus includes preferably four jackswhich are identical in construction and operation, identical powertransmission units, and identical controlling un t for controllin thepower trans.-

missionunits. The jacks are arranged at suitable points of the vehicle;The power transmission units are arranged beneath the vehicle and derivepower preferably from the generator shaft of the engine. The controllingunitseach include a hand operated lever which is within convenient reachof the driver onthe dash of the vehicle.

Inasmuch as the jacks, the power trans mission units and the controllingunits are identical, only one of each will be described for the sake ofconvenience and clearness in explainlng construction and operation ofthe said elements.

The power transmission units 10 are connected in pairs to the shafts 11.One of the shafts 11 is driven from the generator shaft 12 of the engine13 through the interventlon of sprockets 14 and a chain 15. Motion istransmitted to the other of the shafts 11 through the intervention ofgears 16. Each of the units 10 includes a casing 17 which" supports anend of the shaft 11 which has secured thereto gears 18 and 19. A shaft20 is supported for rotation by the casing 17 and has arranged thereonfor sliding movement a block 21 which revolubly carries gears 22 and 28which mesh respectively with the gears 18 and 19. One end of the shaft20has secured thereto a bevel gear 24. 1

Each of the jacks BOjincludes a casing 81 in which is arranged formovement a screw 32. The screw 32 carries a head 83 at one end thereofand a head 34 at the opposite end thereof. Each of the heads and 34 aredetachable from the screw. The head. 33 has grooves 35 which receiveribs 36 of the casing 31 to prevent the'rotation of the said head. Agear 37 having a screw threaded hub 38 is held in place by rollerbearings. The screw 32 extends through the hub 38 and coactstherewithfor the reciprocation thereof. A gear 39 meshes with the gear37 and the said gear 39 is formed on a member 40 which has also formedthereon a bevel gear 41. The memlimr 40 is arranged for rotation onroller bearings supported by a stub shaft 42 supported by the casing 31.The casing 31 is provided with removable caps 43 and 44. By removing thecap 43 access may be had to the gears 37, 39 and 41, and by removing thecap 44 access may be had tothe upper end of the casing 31. The cap 44has a hole for the oiling of the interior parts of the jack.

The end of the shaft 20 having the gear 25 secured thereto is supportedby a bearing 45 secured to the casing 31'. The shaft 20 extends throughthe casing 31 into the interior of the same, and the gear 25 is in meshwith the gear 41. The jacks are arranged at suitable points on thechassis of: the vehicle. There are preferably four jacks one at each ofthe corners or at diagonally opposite points of the chassis. Universaljoints U in the shafts 2O operate to permit the proper operation of thejacks 30 in spite of relative movement of the jacks and the powertransmission units 10.

Each power transmission unit controlling unit includes a rod 50 which isconnected to block 21. One end of the rod 50is connected to a hand lever51 arranged on the dash of the vehicle. The opposite end of the rod 50isconnected to a bell-crank lever 52 pivoted as at within the casing 31of the jack. The lever 52 is connected to a toggle 54 which toggle hasconnected thereto rods 55 and 56. A member 57 on the head 33 is disposedto engage" the rod55, and a member 58 on the head 34 is disposed toengage the rod 56 in the reciprocation of the screw 32 for stopping themovement of the screw.

To operate one of the jacks the hand lever 51 is manipulated to shiftthe gear 22 into meshing relationwith the gear 18. The hand lever 51 ismanipulated after the spark- I ing system of the engine has beenrendered.

inactive by opening theswitch 60 which will open the circuit between thedistributor 61 and the magneto 62. When the gears 22 and 18 are throwninto meshing relation, motion will be transmittedfto the shaft 20 andthrough the intervention of gears 24, 41, 39 and 37 downward movementwill be imparted to the screw 32 for the raising of the part of thevehicle to which the jack is attached. During the downward movement ofthe screw 32 the member 57 on the head 33 will engage the rod 55) andmove the same downwardly. The downward movement of the rod 55 causes thelever 52 to move thus causing a pull on the rod50 and as a consequencethe gear 22 will be moved to a neutral position, thus stopping themovement oil the screw 32. By manipulating the hand lever' 51 so as tothrow the gear 23 into mesh with the gear 19 the reverse rotation of thegear'37 will takeplace and as a consequence the screw 32 will be raisedfor the lowering of the part of the vehicle to which the-jack isattached. During the upward movement-of the screw 32 the member 58 ofthe head 34 will engage the rod 56 and move the same upwardly aided by'a spring 63 whichhas one end attachedto the casing 31 and itsoppositeend attached to the central pivot of the toggle 54. The upwardmovement otthe-rod56 causes the movement ot 'the lever 52am rod 50 andas a consequence the gear 23 will be moved out of mesh with the gear 19to a neutral p0s1- tion inasmuch as the gear is carried by the thevehicle to move during the jacking operations'due to the provision ofmeans iior rendering the sparking system of theiengme inactive. 1 i

What is claimed is:

1. The combination of a mechanically operable ack, motor drivenmechanism for op erating said jack, and manually and auto maticallyoperable mechanism for controlling the operation of said first mentionedmechanism.

2. Jacking apparatus for a motor vehicle including a plurality ofmechanically operable jacks each including a movable screw, mechanismfor effecting the movement of the screw in opposite directions, andmechanism fol-manually and for automatically control ling the operationof the first mentioned mechanism. 7

3. Jacking apparatus for a motor vehicle including a plurality ofmechanically operable jacks attached to relatively remote parts-01$ thevehicle, each of said jacks having a movable lifting screw; mechanismfor effecting the movement of each screw in opposite directions, saidmechanism including power transmission means including gears certain ofwhich are shiitable; and mecha nism for manually and for automaticallyshifting the said shittablegears.

4. Jacking apparatus including a plural ity of mechanically operablejacks each having a movable lifting screw witha head on eitherendthereof and an. actuating member carried by each head; mechanism foreffecting themovement of said screws inopposite directions, saidmeehanism including power transmission means including gears certain ofwhich are shiftable with relation to the other gears which are driven;and mechanism for shifting said shiftable gears including manuallyoperable means, and autoniatically operable means including a pair ofmovable rods connected to said shiftable gears, the said rods beingdisposed to be actuated by saidactuating members.

5. Jacking apparatus includinga plurality ofjacks each includin a casinghaving attaching means, a movable lifting screw, a gearmounted withinthecasing, saidgear having a screw threaded hub which: surroundssaidscrew, a head on each end of said screw, and an actuating membercarriedby each head; mechanism for transrnittingmovement to each earincluding mittable gears; and mechanism for controlling the operation ofthe first mentioned mechanism, said last mentioned mechanism including,manually operable means, and automatically operable means includingspring actuated rods which are connected to said shiftable gears, thesaid rods being disposed to be actuated by said members.

6. J acking apparatus for a motor vehicle,

including a plurality of operable jacks for raising and lowering saidvehicle, and mechanism including manually operable means for operatingsaid jacks singly or in unison.

'7. The combination With an internal combustion engine including anignition system and a driven generator shaft, of a vehicle whichsupports said engine and Which is driven thereby; jacks attached toparts of said vehicle and operable by virtue of the operation of saidshaft to which they are connectedby operating means, and means forrendering said ignition system inactive during the operation of saidshaft in the jacking operations.

In testimony whereof I have aflixed my signature.

JOHN GUTMANN, JR.

